Covering for feed-rolls of spinning machinery



(No Model.)

. S. BERGSTRESSER.

COVERING FOR FEED ROLLS OF SPINNING MACHINERY.

No. 333,813. Patented Jan. 5,'1886.,

UNITED STATES PATENT OFFICE.

SAMUEL BERGSTRESSER, OF PHILADELPHIA, PENNSYLVANIA.

COVERING FOR FEED-ROLLS OF SPINNING MACHlNERY.

SPECIFICATION forming part of Letters Patent No. 333,813,6ated January 5, 1886.

Application filed March 3D, 1885. Serial No. 160,705. (No model.)

To aZZ whom it may concern/.-

Be it known that I, SAMUEL BERGSTRESSER, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Coverings for Feed Rolls of Spinning Machinery, of which the following is a specification.

The object of my invention is to construct a feed-roll for spinning, drawing, and similar machines in such a manner that it will be cheaper and more effective than theleathercovered rolls usually employed, and this ob ject I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which Figure 1 is an elevation, partly in section, of a duplex feed-roll constructed in accordance with my invention, and Fig. 2 a transverse Section on an enlarged scale.

Ordinary feed-rolls of the class to which my invention relates are clothed with leather, the cost of this clothing and the labor of applying it being such that the rolls are comparatively expensive.

Attempts have been made to overcome the objections to leather by using as substitutes therefor tubes of textile material coated or covered with paint or varnish compound,but none of these attempts, so far as I am aware, have been successful, and leather is now universally or almost universally employed.

One reason why the substitutes are not adopted is that they are not such as to warrant the discarding of the usual filling or wrapping of felt between the body or core of the roll and the covering fabric, and are thus not so advantageous on the score ofeconomy as to compete successfully with leather. Another objection is that the substitutes generally lack the strength of leather, so that while they may present a better surface than leather as regards its tendency to resist wear, they are more liable to be injured by handling.

In carrying out my invention with the view of overcoming these objections I first make a tubular fabric of woolen yarn or other yarn capable of being fulled, this fabric, which may be comparatively loose and open being preferably produced on a knitting-machine. I make the tube considerably larger in diameter than the roll to be covered, and I then subject the tube to a fulling operation, whereby its diameter is decreased to the desired extent and the texture of the fabric is at the same time rendered thick and close. I then apply to the tube of fabric a coating consisting of a succession of layers of a paint or filling compound, the latter being of a pasty consistency, and each layer being dried before the application of the next.

The number of layers and the character of the compound may be varied without departing from the main feature of my invention; but I prefer to use a compound of lampblack and linseed-oil, and to apply sufficient of the same to produce a uniform homogeneous coating. The surface of the coating may, if desired, be smoothed by sand-papering or buffing the same; but this is not essential.

A covering prepared in accordance with my invention can be applied directly to the body or core A of a roll, as shown in the accompanying drawings, the fulled tube B taking the place of the usual felt covering, so that as regards the relative economy of my improved roll covering and the ordinary leather covering, I have only the cost of the paint or filling compound D, against the cost of the leather, and consequently am enabled to cover the roll at less expense than usual, while the coating D is much more durable and wear-resisting than leather.

A tubular covering prepared in accordance with my invention also possesses a certain amount of elasticity, so that it can be forced over a roll and caused to fit snugly thereto, an advantage not possessed by coverings formed of tubes of cotton or like inelastic material.

Feed-rolls having coverings in accordance with my invention may be used for other than textile machinery, although especially adapted for the latter.

I claim as my invention-- 1. The within-described covering for feedrolls of machinery, said covering consisting of a fulled tubular fabric having a paint or filling compound applied to the outer face, as In'testimony whereof I have signed my name set forth. to this specification in the presence of two sub- 2. A feed-r011 for machinery, having apscribing Witnesses. plied to the core or body of the same a covering consisting of a fulled tubular fabric of Witnesses:

HENRY BossERT, HARRY SMITH.

SAMUEL BERGSTRESSER.

W001 with a paint or filling composition on the surface, as set forth. 

